Water-gage



(No Medal.) 2 Sheets-8heet 1.

, J. G. BLOUNT.

WATER GAGE.

No. 401,326. Patented Apr. 16., 1889.,

' 2 Sheets-Sheena J. G. BLOUNT. WATER GAGE.

(N0 Muriel.)

Patented Apr. 16, 1889.

Zl/Msses I N. PETERS. Pboto'ulhognphor. wmzmm, n.c.

NITED STATES PATENT Frrcn.

JOHN G. B'LOUNT, OF BOSTON, MASSACHUSETTS.

WATER-GAG E.

SPECIFICATION forming part of Letters Patent No. 401,326, dated April16, 1889. Application filed May 22, 1888. Serial No. 274,639. (Nomodel.)

To all whom it may concern.-

Beitknown that I, JOHN G. BLOUNT, of Boston, county of Suitolk, State ofMassachusetts, have invented an Improvement in W'ator-Gages, of whichthe following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing likeparts This invention has for its object to improve the construction ofwater-gages.

In accordance with this invention, the valve at the upper end of thegage is adapted to be manipulated by a rotatable valve-stem, it beingarranged to serve as'a check-valve when the valve-stem is in oneposition, and may be held positively against or away from its seat whenthe valve-stem is in other positions. The valve at the lower end of thegage is arranged to perform substantially the same functions as thevalve at the top of the gage, and in addition thereto to open a blow-offport when the valve-stem is in a certain position.

Figure 1 shows in side elevation a watergage embodying this invention;Fig. 2, an end view of valve at the lower end of the water-gage; Fig. 3,a vertical section of the valve at the lower end of the water-gage; Fig.4, a detail to be referred to Figs. 5 and 6, vertical sections ofmodified forms of valves.

The valve-case a at the lower end of the water-gage is of suitable shapeto contain the operating; parts, to be described.

The valve-case a (see Fig. 3) has a passage through it, as a, which isobstructed or controlled by a valve, (6 attached to a link, a by whichit is moved toward and from its seat. The link has an elongated openingthrough it, as at a, which receives a pin, a attached eccentrically to ahub or boss, a. The hub or boss is circular, and has two annularflanges, a arranged to present a groove or space, a, between them. Thehub or boss a is attached to or formed integral with a stem, a", havingits bearing in any suitable bearin g-nut or stuffing-box. A hand-piece,a is attached to the stem a, by which the stem is rotated. It will beseen that when the valve-stem a is in one position-such, for instance,as when the hand-piece a occupies the left-hand dotted-1ine position,Fig. 2-the valve a will be held firmly against its seat. When thevalve-stem a is in another-as, for instance, its intermediate position,as shown by full lines, Fig. 2, and also Fig. 3the valve a is moved fromits seata short distance, and by the slot a the valve is susceptible ofa free movement toward and from its seat by pressure or by exhaust, andat such time said valve serves as a check-valve. When the valve-stem ais in another or its last position, as shown by dotted lines, Fig. 2,(the handpiece a at such time being moved to its extreme position towardthe right,) the valve a will. be held from its seat so that it cannot bemoved toward. or against its seat by pressure or exhaust. The threepositions may be best obtained when the pin a is on one orits otherdead-center or upon the quarter.

The flange a of the hub a has a hole, a, through it, which, when the hubis in a certain position, registers with a port, (W, in one wall of thevalve-case, and when the parts are so moved as to register a free andunobstructed passage is presented from the inte-' rior of the valve-casethrough the port a, port a groove or passage or, and port a. Thispassage will be used as a blow-oft. The valve at the upper end of thewater-gage may be constructed substantially as herein shown, thevalve'case being somewhat differently shaped in order that the valve aand its operating parts may be substantially as before described and thepassage through it differently shaped, although the upper valve-case andvalve are not designed to have a blow-01f.

When the water-gage is attached to a boiler or tank, the hand-pieces aare set so that the valves a shall operate as check-valves, and if forany reason the glass tube b should be broken the valves will closeagainst their seats and obstruct the passage through the valve-cases Thehand-pieces may be thereafter turned slightly to hold the valves againsttheir seats positively while a new tube is being placed in position. Itwill thus be seen that by manipulating the valves by handpieces a allthe functions required for operating, repairing, or testing thewater-gage j will be properly performed.

Referring to Fig. 5, instead of employing a hub a", having flanges a andthe annular groove or space a a tapering hub, c, is provided, to whichis attached eccentrically the pin (F. In this instance the hub c has agroove or port, (not shown,) which, when the hub is in a certainposition, registers with aport (not shown) in one wall of thevalve-case, and also with a port,

In Fig. 6 the hub c has a port, cl, through it, which registers with aport, d, when it is desired to blow off.

The operation of the valves shown in Figs. 5 and 6 is substantially thesame throughout as that shown in Fig. 3. Instead of the valve 0, hereinshown a valve of any other suitable construction having a ground orother joint may be employed.

I claim- 1. In a water-gage, the valve-case a, having the passagethrough it formed with but one communicating port, the valve to controlsaid port, combined with the link of, loosely conthe entire passagethrough it formed with but one connecting port or orifice, and thevalve, as a combined with a rotatable stem, the eccentric-stud thereon,and the slotted link loosely connecting said valve and stem, by whichthe valve a may be moved positively toward or from its seat, and mayalso be held at an intermediate position to serve as a check-valve, andthe hand-piece a by which the said stem is semi-oscillated,substantially as described.

4. In a water-gage, the valve-case a, having a passage through it, avalve controlling said passage, combined with a slotted link, a looselyconnected with the said valve, and the stem for moving the link,substantially as described.

5. In a water-gage, the valve-case a, having the passage through it, anda single connecting port therein, the valve a for said port, and theblow-cit passage or port, combined with the oscillating valve-stem forsimultaneously moving the valve'oz, and for controlling the blow-oftport or passage, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN G. BLOUNT.

l/Vitnessesz BERNICE .T. NoYEs, F. L. EMERY.

